This is the radio controlled, glow or electric powered, 1/4 scale almost-ready-to-fly, Great Planes RV4 Sport Scale Airplane. Ideal for a modeler wanting to step into large scale airplanes and for learning how to fly with flaps. IMAA Legal. FEATURES: Construction: Balsa and ply Wings: Prebuilt halves slide onto aluminum joiner and bolt to fuselage Covering: Covered in Top Flite MonoKote, see